JP3608301B2 - Brush roll - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a brush roll for removing scales and the like attached to the surface of a rolling roll.
[0002]
[Prior art]
Since non-ferrous metal oxides adhere to the work rolls of rolling mills that roll non-ferrous metals such as aluminum as scales, the brush rolls with brushes planted on the roll surface are in contact with the roll surface while rotating. Has been done to remove.
[0003]
FIG. 5 is a view showing a conventionally used brush roll. A work roll 1 for rolling aluminum or the like is supported at both ends by a shaft box 2, and the shaft box 2 is supported by a housing 3. The brush roll 4 rotates in contact with the work roll 1 and removes the scale attached to the surface of the work roll 1 with the brush. A bearing that supports both ends of the brush roll 4 is supported by a bearing support portion 5 so as to be swingable about a swing center pin 6 attached to the shaft box 2. The bearing support portion 5 is pressed in the horizontal direction by a reduction cylinder 7 fixed to the housing 3, and the brush roll 4 rotates while being pressed against the surface of the work roll 1 to remove the scale. Since the brush is made of a synthetic resin such as nylon and cannot withstand the temperature of the work roll 1, the cooling liquid is discharged from the cooling liquid discharge header 8 onto the contact surface to be cooled. The brush roll 4 is provided with a cover 9 over a half circumference to prevent the coolant from splashing.
[0004]
[Problems to be solved by the invention]
Since the discharged cooling liquid adheres to the nearby brush in contact with the work roll 1, an unbalance occurs in the circumferential mass distribution of the brush roll, and vibration is generated in the brush roll. Moreover, the place which shines well on the surface of the work roll 1 by this vibration and the place which is not so appear. Unevenness, which is a difference in gloss on the surface of the work roll 1, appears on the surface of the rolled material. Further, since a part of the scale being removed adheres to and accumulates on the brush, it has been necessary to remove this occasionally.
[0005]
The present invention has been made in view of the above-described problems, and an object thereof is to provide a brush roll that prevents vibrations generated due to imbalance in the discharge of the cooling liquid and in which the removed scale is less likely to adhere. To do.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, in the invention of claim 1, in the brush roll that rotates in contact with the work roll that rolls the material to be rolled and cleans the work roll with the brush that is planted on the surface, the brush roll comprises: A hollow portion serving as a coolant passage is provided inside, and coolant discharge ports connected to the hollow portion are provided radially from the inside over the brush existence range, and the hollow portion is provided in a plurality of regions in the axial direction. A flow rate control means for controlling the flow rate of the coolant supplied to each region is provided.
[0007]
The coolant is discharged radially from the hollow portion inside the brush roll through the coolant discharge ports provided radially toward the roll surface. As a result, the cooling liquid adheres almost uniformly to the entire circumference of the brush, so that vibration due to unbalance does not occur. Moreover, since it discharges radially from the inside, it is possible to wash away the scale attached to the brush and prevent the scale from accumulating in the brush.
Further, the temperature distribution in the axial direction of the work roll is not uniform, for example, it is high at the center and low on both sides. For this reason, the hollow part is divided into a plurality of areas along the axial direction of the brush roll, this area is made to correspond to the temperature distribution of the work roll, and the flow rate of each area is controlled according to this temperature to prevent damage due to overheating of the brush can do.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, reference examples and embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view of a brush roll showing a reference example . 2 is a cross-sectional view taken along the line XX of FIG.
[0011]
The brush roll shaft 10 is provided with a hollow portion 11 along the axis, and this hollow portion 11 serves as a coolant supply path. A brush 12 made of resin is implanted on the surface of the brush roll shaft 10 except for both ends. Discharge ports 13 are provided in the brush roll shaft 10 radially from the hollow portion 11 over the range of the brush 12. Bearings 14 are provided on both sides of the brush roll shaft 10 and are rotatably supported. Further, a rotary joint 15 is provided in the vicinity of the bearing 14 to supply the coolant from the stationary coolant supply line 16 to the hollow portion 11 of the brush roll shaft 10 that rotates. A flow rate control valve 17 is provided in the coolant supply line 16 to adjust the flow rate according to the temperature of the work roll 1.
[0012]
With such a configuration, the coolant is discharged radially from the hollow portion 11 toward the brush 12, so that the coolant becomes substantially uniform in the circumferential direction of the brush 12, no imbalance occurs, and vibration due to rotation does not occur. Further, since the cooling liquid is discharged radially from the inside, it functions to wash away the scale attached to the brush 12 and prevents the scale from accumulating in the brush 12.
[0013]
Next, embodiments of the present invention will be described with reference to the drawings. FIG. 3 is a longitudinal sectional view of a brush roll showing an embodiment of the present invention . 4 is a sectional view taken along line XX in FIG. In this embodiment, the hollow portion 11 in the presence range of the brush 12 is divided into three regions in the axial direction with respect to the reference example , and the flow rate of the cooling liquid is controlled and supplied to each region. is there.
[0014]
Three regions are provided by the partition wall 18 in the hollow portion 11 where the brush 12 exists, and the coolant is supplied to each region from the rotary joint 15 through a pipe. A coolant supply line 16 is connected to each region, and a flow rate according to the temperature distribution of the corresponding work roll 1 in each region is supplied by a flow rate control valve 17 provided in each line 16. Although the number of regions is three, other numerical values may be used depending on the temperature distribution state of the work roll 1.
[0015]
With this configuration, in addition to the effects of the reference example , it is possible to supply an appropriate flow rate of the cooling liquid according to the temperature distribution in the axial direction of the work roll 1, and it is possible to effectively prevent the brush 12 from being damaged by overheating.
[0016]
【The invention's effect】
As is clear from the above description, the present invention discharges the cooling liquid radially from the inside of the brush roll shaft, so that it adheres to the brush almost uniformly in the circumferential direction, and vibration due to unbalance occurs on the brush roll shaft. Can be prevented. Thereby, it is possible to prevent unevenness due to cleaning from occurring on the roll surface of the work roll. Further, the burn-in of the brush roll can be effectively prevented by dividing the hollow portion of the brush roll shaft into a plurality of regions in the axial direction and adjusting the flow rate of the coolant according to the temperature of the work roll corresponding to each region.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a reference example .
2 is a cross-sectional view taken along the line XX of FIG.
FIG. 3 is a longitudinal sectional view of an embodiment of the present invention .
4 is a cross-sectional view taken along the line XX of FIG.
FIG. 5 is a diagram showing a conventional brush roll coolant supply method;
[Explanation of symbols]
1 Work Roll 2 Shaft Box 3 Housing 4 Brush Roll 10 Brush Roll Shaft 11 Hollow Part 12 Brush 13 Discharge Port 14 Bearing 15 Rotating Joint 16 Coolant Supply Line 17 Flow Control Valve 18 Partition Wall

Claims (1)

In the brush roll which cleans the work roll with the brush which is in contact with the work roll which rolls the material to be rolled and is planted on the surface,
The brush roll has a hollow portion serving as a coolant passage inside, and coolant discharge ports connected to the hollow portion are provided radially from the inside over the brush existence range ,
The brush roll is characterized in that the hollow portion is divided into a plurality of regions in the axial direction, and flow rate control means for controlling the flow rate of the coolant supplied to each region is provided .

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